Why is the sky blue?

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2019-09-08 17:40:08

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Why is the sky blue?

In ancient times it was believed that the sky is made of clear crystal with the blue shade

Why the sky has a blue tint, and not, say, pink, green or yellow? In Ancient Greece believed that the sky is blue is because the sky is made of special crystal with blue tint. During the middle Ages it was believed that the blue color appears due to the mixing of black and white colors, and only in the 18th century made the assumption that the blue color appears due to reflection of light from tiny water droplets floating in the atmosphere. The last word on the question of why the planet was surrounded by bluish, not red or yellow haze, was the English physicist John William Stratton, who in 1899 proved that the color of the sky depends on the wavelength of the light emitted by the Sun and the intensity of the scattering rays in the planet's atmosphere.

Why is the sky not red?

Despite the fact that the main color of the sky is blue, many of us know and have seen that in reality the sky is able to demonstrate a much more sophisticated shades. So, the evening sky you can often see the pink, though in a cloudy morning of the same day the sky had only the palette in shades of gray. The inhabitants of the Northern regions much more likely to see the sky milky white than blue, and the inhabitants of the southern regions can see a bright orange sunsets.

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The Mechanism of appearance of different shades of the sky simple. The sun's rays are white, which is refracted on the smallest water droplets in the atmosphere. Due to the fact that the white color includes all colors of the rainbow, refracted, it breaks up into different colors. But why, then, the main color of the sky is blue?

The fact that each colour has its own specific wavelength, depending on which the light diffusion. Colors like green, yellow, orange and red are scattered with a much lower intensity than the blue or purple, which the only appropriate color, in the middle of these extremes, it becomes blue.

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Why the sky is different colors?

the Sky is not blue

Sometimes, due to the relatively large particles of water, the sky scatters light waves with higher intensity, which leads to the fact that we can see the sky a milky white color.

At the same time, at sunset, we often witness the passage through the earth's atmosphere is more long-wave radiation in red and orange tones. This effect is because in a time when hiding behind the horizon, the light from our sun takes a much greater distance in the atmosphere than in the daytime. Scattered along the way, blue and blue color fall on the weaker intensity of red and orange, turning the sky into a colorful landscape.

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